Device for preventing derailment.



E. CASTANHO.

DEVICE FOR PREVENTING DERAILMENT.

APPLICATION FILED MAR, 27-1917.

Patented Jan. 8,1918.

2 SHEEIS-SHEET 1.

E. CASTANHO. DEVICE FOR PREVENTING DERAILMENT.

APPLICATION FILED MAR. 27. I917 Paten'ted Jan. 8, 1918.

Z SHEETS-SHEET 2- mmwo WITNESSES a rant ELISIARIO CASTANHO, OF SADPAULO, BRAZIL.

To all whom it may concern Be it known that I, Emsmnio CASTANl-IO, acitizen of Brazil, and a resident of Sao Paulo, Brazil, have invented anew and Improved Device for Preventing Der-ailment, of whichthefollowing is a full, clear, and exact description.

My invention relates to means applicable to a railway truck to preventderailment, and particularly relates to a device for the indicatedpurpose in which guard wheels are adapted to be positioned to turn onvertical axes and engage a lateral nervure or rail on the track.

An object of the invention is to provide novel and practical means tolower or to raise the guard wheels to and from the 0perative position. i

A more specific object of the invention is to provide controlling meansfor the guard wheels comprising co-acting truck and track devices forautomatically raising and lowering the guard wheels at a crossing track.

The invention also has for an object to provide an attachment of thecharacter referred to that may be applied with facility to standardrailway trucks without material alteration of the truck.

The invention will be particularly eX- plained in the specificdescription following.

Reference is to be had to the acco1npanying drawings forming a part ofthis specification in which similar reference characters indicatecorresponding parts in all the views.

Figure 1 is a transverse vertical section on the line 1-1, Fig. 2showing my invention applied to a railway truck;

Fig. 2 is a longitudinal vertical section on the line 22, Fig. 1;

Fig. 3 is a detail side elevation of the shoe for raising the guardwheels at a crossing a portion of the element carrying the shoe beingshown in cross section;

Fig. 4 is a view similar to Fig. 3 but on a reduced scale, and showingthe third rail elements which are positioned in the track to effect theraising and lowering of the shoe;

Fig. 5 is a detail showing a modified arrangement of the lateral rail.to engage the tread of a guard wheel;

Fig. 6 shows one feature of my invention embodied in a locomotive pilot.

Referring more particularly to Figs. 1 to 5, the numeral 10 indicates arailway truck Specification of Letters Patent.

Application filed March 27,

PEVIGE FOR PREVENTING DERAILMENT.

Patented Jan. 8, 191%.

1917. Serial No. 157,730.

which may be of any approved construction having wheels 11 running ontracks 12. On the truck 10 guard wheels are provided to engage the rail12 and carrying means therefor, of suitable construction, having anarticulated connection with the truck. In the form shown, arms 13 areprovided. pivotally secured at their upper ends by bolts 14.- or thelike to a bracket plate 15 which is bolted to a lower frame member 16 ateach side of the truck, tl e arrangement at each side be ing alike. Atthe lower ends the arms 13 diverge as shown in Fig. 2 and have secured.thereto a horizontal bar 17, the whole constituting a frame adapted toswing with the bolts 14- as pivots. To an end of each swinging frame aguard wheel 18 is mounted to turn on axles 19 which are verticallydisposed when the wheels are in the lowered position so that the treadsof the wheel will bear laterally against lateral nervures or railelements 20, these being shown in Figs. 1 and 2 as formed integral withthe rails 12, whereas in the form shown in Fig. 5 Ol'dl" nary T-headedrails are provided for both the main rail 12 and the lateral rail 20. InFig. 4, the character 12 indicates a rail of a crossing track. and 20the lateral rib or integral nervure thereof.

Between the arms 13 of the wheel-carrying frame. a transverse rod orbolt 21 extends, and turning thereon is a friction roller or sleeve 22.Loosely embracing the rods 21 and their rollers 22 are bridles 23depending from the ends of a vertically movable, transverse bar 24:. Thebar 24 is permitted vertical guided movement on hanger bolts 25 whichdepend from a fixed transverse bar 26 which extends across the truck 10and is rigidly secured thereto by any suitable means. The hanger bolts25 extend loosely through vertical holes 27 produced in the bar 2%.

In order to raise the bar 24 for swinging the wheel-carrying framesupwardly upon approaching a crossing track and permitting the same tolower after the crossing track has been passed. co-acting means areprovided in the track and on the bar 21. The track devices consist ofinclined third-rails 28, it being understood that one of these isprovided in the main track lengthwise thereof at each side of thecrossing track. while between the rails of the crossing track anelevated level rail 29 extends at a height above the crossing rails 12*:On the cross bar 24: is a shoe designated generally by the numeral andhere shown as provided with a series of wheels or rollers 31at the underside to run on the rails 28, 29. The shoe is hung by a transverse pivot33 in an inverted Or U-shaped shackle 32, which is secured by screws orotherwise to a spindle 3a that extends vertically at its upper end as at35 (Fig. 1) through the bar 2a and is secured to the latter by a setscrew 36 or other means.

On each side of the shackle 32 springs 37I are Provided connectedrespectively, with the said shackle and with the shoe 30 so that thelatter may swing in a vertical plane on the pivot 33 and be returned toits normal position by the springs 37. From the foregoing, it will beclear that since the rails 28 present respectively ascending anddescending gradients the shoe 80 will rise upon approaching a crossingtrack and ride over the crossing rails 12, travelingon theintern'iediate third rail member 29 to the opposite or descendinggradient at the opposite side (not shown), permitting the shoe todescend after the crossingtrack has been passed. The raising of the shoe30 will raise the bar 24, thereby causing the bridles 23,

thereof to engagev the rollers 22 and swing the guard wheels 18 upwardlyto clear the crossing track the guard wheels being lowered after thecrossing tracks have been passed. In the lowered position the flanges ofthe guard wheels 18 will extend under the lateral rails (20, etc.,)without direct contact therewith, the flanges being in position,however, to engage the said lateral rails in the event the truck tendsto tip, thereby preventing derailment. In the lowered position of thebar 24, the bridles 23 at the tops will lie close to the rollers 22 andprevent the.

wheel-carrying frame from swinging upwardly.

My improved shoe 30 and the inclined rails 28, 29 may be employed toraise a locomotive pilot at a crossing. Fig. 6 illustrates the shoeapplied to a pilot 41 vertically movable 0n the locomotive, part ofwhich is indicated at 4:2. The connecting means may consist of a hook 43on the pilot movable in a slot 14 in any convenient part of thelocomotive.

Having thus described my invention I claima new, and desire to secure byLetters Patent:

1. In a device to prevent derailment, a vertically movable bar,swingable elements, bridleson the vertically movable'bar to engage saidswingable elements and swing the same by an upward movement of the bar,the bridles in the lowered position acting to prevent upward movement ofsaid swingable elements, guard wheels carried by the swingable elementsto engage V laterally against lateral track rails, means to mount thedevice on a railway truck, and actuating means on the movable baradapted to be engaged by a track trip. 7

2. The combination with a railway truck of guard wheels, carrying meansfor the wheels swinginglymounted on the truck, a vertically movable,transversely disposed bar engageable with said carrying means toraisethe same, a shoe pivotally hung at about its center on the said bar andadapted to be engaged by a track trip to raise the bar, and

spring means normally tending to maintain the shoe in a plane parallelwith a railway tracln 3. The combination with a railway truck, of afixed transverse bar, depending hangers thereon, a transversely disposedbar movable vertically on said hangers, and formed with bridlesthereonnear the ends, frames at the sides of the truck and swingable in avertical plane, guard wheels on said frames adapted to bear laterallyagainst a track rail, said frames having members thereon engageable bysaid bridles,a shoe on the vertically movable bar, and trip means in therailway track to engage said shoe for. raising the movable bar,the saidtrip means includingv inclined rails at the sidesof the crossing tracksandv transverse thereto, presenting ascending and descending gradients,and a co-acting .transverse rail. between the rails of the crossingtrack and above the latter.

ELISIARIO CASTANHO.

Copies of this patent may be obtained for five cents each, by addressingthe fGommissioner of Patents,

Washington, D. c."

